Valve.



J. W. MASTER.

VALVE.

APPLICATION IILED no.3, 1912.

Patented June 10, 1913.

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UNITED 's'aa'rasr gnnr OFFICE.

JAMES W. MASTER, OF SAN DIEGO, CALIFORNIA, ASSIGNOR 0F ONE-THIRDTO BRYANT H. HOWARD, OF SAN DIEGO, CALIFORNIA. 3

Application filed December a, 1912. Serial No. 734,765.

To all whom, it may concern:

Be it known that I, JAMES WV. MASTER, a citizen of the United States, residing at San Diego, in the county of San Diego and State of California, have invented a new and Improved Valve, of which the follow- .ing is a full and exact description.

My invention has reference to valves and is designed as an improvement on the valve shown and described in Letters Patent No. 752,241, issued tome on the sixteenth day of February, 1904. It is a design of the invention to produce a valve that is simple, compact, and du'ra-,

ble, that has correlative parts effectual in preventing leakage at the valve-stem irrespectiveof the pressure within the valve or the manipulation of the valve parts, that has interchangeable and detachable parts, that has a large reservoir for a lubricating material to be placed therein for the protection of the valve-stem joint from wear, and from scale and the like, that has an increased area of valve seat opening, that has means for a closer and more perfect fit of the valve disk- :inits seat insuring a more positive closure of the same, that obviates the turning of'the valve-stem out of 1ts "thread when the valve is opened to its fullest extent, that has a packless valve-stem .tl 1ereby obviating the necessity of a fre quent renewal of parts, a common occurrence in valves of ordinary structure, that has means for holding the valve-stem joint in. a close contact constantly, thereby effectively'. maintaining its eflicincy for controlling the flow of a medium, and that has a minimum number of parts effective for economy of structure and production.

, The principles herein related may be embodied into any suitable form of apparatus and combination of parts, provlded that Y the elements thereof are relatively proportioned and arranged to perform the functions herein set forth and operate in the manner herein described, a preferred form of the device being shown in the accompanying drawings, wheron- Figure 1. is an elevational section of a valve incorporating the principles of th1s invention, and Fig. ,Z-rs'a plan view of the lower end of the bonnet and the uppervalve stem, assembled In the several figures of the drawing,

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Patented June 10,1913.

similar reference characters apply,toililte parts. I 1.

Assuming the invention to, be embodied in the form illustrated, a valve shell 1, is .providcd with ports 2 and respectively at each end thereof, and web 4, forming compartmcnts, said web having valve seat 5, with an opening as large as practicable for an effectual means of comnumication between said compartments, and with bcvelcdedges, at.

sion 11, in shell 1, the threaded part being sutlicient to avoid disengagement with'said extension when the valve; is opened to the full extent, and also has thcyupper part flattened with parallel faces 12, to, engage with a correspondingly shaped socket 13, in.

the lower'end of upper stem,14. Stem 14 is manipulated by hand wheel 15, and is rotatably mounted in bonnet 16, the. stem being provided with cone flange 17 engaging with a corresponding flange 18, of the bonnet, thereby forming a cone joint which prevents leakage around the valve stem. Chamber 19, above this joint, may contain oil or lubricant which will be fed to all working parts of the valve. The lubricant will cause a more perfect closure of the cone joint and the lubrication of the parts tends to prevent the formation of scale and the like. The upper part of chamber 19 contains a coiled spring 20, hearing against collar 21, underneath the hub of hand wheel 15, which tends to force the valve stem upward, thereby retaining the cone oint in close contact and producing a self-grinding joint, an important desideraturn in valve structure. A metallic Washer or gasket 22, is fitted in said bonnet, and is retained by and in groove 24, just above the screw threads connecting the bonnet with thevalve shell, the said Washer preventing scale and the like from cont-act with the cone joint. The bottom of the valve shell is provided with a removable cap 23, which, when removed, leaves an opening for the more convenient access to has no vertical movemer and that the valve disk seats with the pressure, making a shorter valve stem practical, and a smaller hand wheel suitable. for its manipulation.

The lubricant needs renewal only at long intervals. Changes and different degrees of temperature of the different parts do not affect the jointsgas they are'self adjusting. The hand wheel and stem are braced and well supported by the bonnet. All working joints in the valve areprotected from grit and the like, by the hub of the hand wheel which covers the upper end of the bonnet. The. valve may be. made at a low cost as only the screw threads and working joints require machine finish. -The pressure the valve will withstand is limited only by the strength ofthe material used in its construction. Similar "alve stems and bonnets may be made to interchange on twoiconsecutive sizes of the valve. Valve stem threads 10, are left-handed, permitting the non-rising stem 14, to be operated in the usual manner to open and close the valve.

' From the foregoing:description taken in connection with thedrawings, it may be seen that simple 'means are herein provided which are efficient and effectual for accomsplishing the objects of the invention, and

the elements shown and described are well adapted to serve the purposes for which .they are intended, but it is to be understood that no limitation is necessarily made to the such changes if made, to at all times fall within the scope of the appended claims, the essence of myv invention comprising a device with the combination and arrangeplish the purposes set forth, I claim as my.

invention-- p The eomblnation with a valve casing, 0

a valve stem having screw connection therewith, the upper end of sai'd'item beingflat- 'tened, a bonnet connected to the upper end of said casing, an upper valve stem carried by said bonnet, said upper stem having a'socket to engage with said flattened end of the lower valve stem, said upper valve stem hav-' ing a cone joint arranged at the lower part of the socket end and forming a connection with said bonnet, said bonnet being provided with an undercut groove, and a gasket arranged in said groove between said bonnet and casing and fitted around the-socketed portion of said upper valve stem to prevent leakage when said valve stems are actua-ted, substantially as set forth.

In testimony whereof I have affixed. my signature to the foregoing specification, this 14. day of November in the year 1912.

I r Y JAMES w. MASTER. In the presence of- BRYANT H. HOWARD, F. L. ANDREWS. 

